NAME

       Munin::Master::LimitsOld - Abstract base class for workers.

SYNOPSIS

       This is Munin::Master::LimitsOld, a minimal package shell to make munin-limits modular (so
       it can be loaded persistently in a daemon for example) without making it object oriented
       yet.  The non-'old' module will feature proper object orientation like munin-update and
       will have to wait until later.

       Get a list of severities, and return a sorted, lower cased, unique and validated list of
       severities.

       Expects and returns an array reference.

       If none of the severities given are on the allowed_severities list, it will return a
       reference to an empty array.